Paper carton.



Patented May 1, 1917.

Zh/venan' L. W. FARMER.

PAPER CARTON.

APPLICATION FILED MAR. 4. |914. 1,224,726.V

'Zwin/asses QM, 0. $.71...

LUKE W. FARMER, OF SOmVILLE, IASSACHUSETTS.

rum cAnroN.

Specification of Letters Patent.

Patent-,edMay 1, 1917.

' Application mea umn 1.,` 1914.. serial no. szaass.

To all whom it may concern.'

Be i1'. known that I, LUKE W. FARMER, a citizen of the United States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Paper Cartons, of which the following is a specification.

This invention relates to paper-cartons adapted to contain milk, oysters, and-other liquid and semi-liquid substances, as well as solids, and the invention resides particularly in the top-closure of the carton, and so far as my present invention is concerned, the form of the body of the carton and its bottom-closure may be of any well-known or suitable construction.

\ The invention has for its object the construction of the paper carton having a topclosure which is liquid tight and which is arranged to avoid the production of a recess or well at theI top of the carton which is very objectionable.

The top-closure embodying this invention involves the construction of the upper endportion of the body and also of a closingcap. My invention is susceptible of certain modifications, as will be described. Figure 1 is a side-elevation and partial section of a paper-carton having a top-ciosure embodying this invention.

Figs. 2- and 3 are similar views of modiiied forms of the invention.

Referring to Figs. 3, v10 represents the body of the carton which is composed of thick, heavy paper, such as tag-stock for instance, and which may be made cylindrical or frusto-conical, as desired. The upper ond-portion of said body is formed near its edge, with an outwardly extended corrugation, which is arranged circumferentially entirely around it, thereby to form on the interior of the body a circumferential groove or recess 12 at the bottom of a short verti-` cal portion 13, and on the exterior of the body a circumferential rib 14. The closing-cap, in the simplest form of the invention here shown, consists of a thick circular disk of heavy fiber-board or paper-board, which may be composed of numerous thin layers of paper adhesively secured together to form a solid structure or mass of great hardness and density. Said disk is made of a thickness corresponding to the distance between the upper edge of the body and the lower side of the groove or thereabout, and its edge is formed by cutting or otherwise to exactly conform to the interior of the upper end-portion of the body, said edge having a vertical portion corresponding to the vertical portion 13 between the upper edge of the body and the top of the groove'and having an outwardly curved portion corresponding to the shape and dimensions of the groove 12, so that saiddisk when thrust into -the top of the body will engage the interior wall thereof at the upper endportion and form a tight joint thereat. It will be understood that while the body is composed of paper which is thick and heavy, yet will have some resiliency, enabling it to yield and admit of the curved projecting rib on the disk passing the short vertical portion and then to assume its normal position and engage the edge of the vertical portion of the disk when the projecting rib thereon has entered the groove in the body. When the disk is sprung into place its top surface occupies a position flush with the up er edge of the body, so that no recess or well is produced at the top of the carton. In a modiiied form of my invention, see Fig. 2, a circular disk 20 is adhesivel or otherwise secured to the top of said dlsk, which is made of larger diameter, so that its edge-portion extends over the upper edge of the body, but, in view of the tight joint produced by the engagement of the disk with the body said supplementary disk is not of great importance.

In another modification of my invention, see Fig. 1, a supplementary circular disk 30 having a ange 31 at its edge is adhesively or otherwise 'secured to the top of the disk and said flange is arranged to engage the exterior of the body, and to extend over and engage the outwardly extended curved rib on the exterior thereof. This form of the invention, like the aforesaid modification, is not of great importance, in so far as forming a tight joint is concerned, although these supplementary pieces may be easily and economically printed upon, so as to serve as an advertising medium. If employed, however, they should be made of substantially the dimensions here shown, as compared with the body, so as not to present projecting edges.

I claim v 1. A carton including a paper body formed near its upper end portion to provide on the interior of the body an annular channel, and a portion above Ithe channel in parallelism BEST AvAiLAeLE COP` with the axial line of the body, and a disk of substantially uniform thickness having an annular edge projection coincident with the lower surface of the disk to fit the channel and the body, the edge surface of the disk above said projection being at right angles to the surface of the disk to fit throughout that portion of the body above the annular channel.

2. A carton includingxa paper body formed on the interior near t e upper end thereof with an annular channel, a disk having an edge portion formed to seat in the channel, that portion of the disk above the edge portion, and the corresponding portion of the iXi body above the channel being 'arramcd for engagement and bein disposed in ruildism with the axisof 51e body, rd n second disk secured to the first mentioned disk. .nd projecting beyond the edge of the latter to provide a portion to en ge the upper edge of the body when the arst mentioned disk is in seating condition therein.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LUKE W. FARMER.

Witnesses:

Axes L. Tnmon, Gnomiz Bomann. 

